温度对蝇蛹俑小蜂寄生瓜实蝇蛹功能反应的影响  

Effect of temperature on functional response of the parasitoid Spalangia endius( Hymenoptera: Pteromalidae) on the pupae of the melon fly,Bactrocera cucurbitae( Diptera: Tephritidae)

作　　者：李羕然 吴伟坚[1,2] LI Yangran;WU Weijian(Laboratory of Insect Ecology,South China Agricultural University;Key Laboratory of Bio-Pesticide Innovation and Application of Guangdong Province,Guangzhou, Guangdong 510642,China)

机构地区：[1]华南农业大学昆虫生态研究室 [2]广东省生物农药创制与应用重点实验室,广东广州510642

出　　处：《生物安全学报》2017年第4期289-292,共4页Journal of biosafety

基　　金：国家科技支撑计划(2015BAD08B03);公益性行业(农业)科研专项(201103026-4)

摘　　要：【目的】蝇蛹俑小蜂是很多双翅目害虫的蛹寄生蜂。了解温度对寄生蜂寄生效能的影响是利用寄生蜂控制害虫的重要前提。【方法】实验室条件下设置温度为21、24、27、30、33℃,测定温度对蝇蛹俑小蜂雌蜂寄生瓜实蝇蛹功能反应的影响。蝇蛹俑小蜂对瓜实蝇蛹的功能反应用Michaelis-Menten-Ⅱ型功能反应模型N_a=AN/(F+N)进行拟合。【结果】不同温度下蝇蛹俑小蜂的寄生潜能(A)和寄主半饱和密度(F)不同。当温度在27℃时,其寄生潜能最大;而寄主半饱和密度随着温度升高而降低。【结论】瓜实蝇在瓜地盛发期的栖境温度适宜蝇蛹俑小蜂的寄生。【 Aim】 Spalangia endius Walker （ Hymenoptera： Pteromalidae） is a pupal parasitoid of numerous dipteran pests. Under-standing the effects of temperature on parasitic efficiency is critical in utilizing them in pest control.【 Method】 Laboratory studies were carried out to determine the parasitization potential of female S. endius on the pupae of mel o n fly Bactrocera cucurbitae （ Coquil- lett） （ Diptera ： Tephritidae） under five constant temperatures （21 ℃,2 4 ℃,2 7 ℃,3 0 ℃,33 ℃）. Attack responses of S. endius on melon fly were described by a Michaelis-Menten type n model =A^/（F＋W）.【 Result】 Both parasite potential （ A ） a nd halfsaturated host density （ F） were influenced by temperature. T h e maximum parasite potential w as registered at 2 7 whereas half saturated host density decreased with increasing temperature. 【 Conclusion】 The optimal temperature w as similar to temperature in the habitat in the melon field, indicating parasitoid adaptation.

关 键 词：蝇蛹俑小蜂 瓜实蝇 温度 寄生潜能 

分 类 号：S476.3[农业科学—农业昆虫与害虫防治]